Journal of international Conference on Electrical Machines and Systems

  • 제2권2호
  • /
  • Pages.225-231
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  • 2013
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  • 2234-6902(pISSN)
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  • 2234-7577(eISSN)
대한전기학회 분과 (Journal of International Conference on Electrical Machines and Systems)
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Stability Enhancement of a Hybrid Micro-grid System in Grid Fault Condition

  • Ambia, Mir Nahidul (Dept. of Electrical Engineering, The Petroleum Institute) ;
  • Al-Durra, Ahmed (Dept. of Electrical Engineering, The Petroleum Institute) ;
  • Caruana, Cedric (Faculty of Engineering, University of Malta) ;
  • Muyeen, S.M. (Dept. of Electrical Engineering, The Petroleum Institute)
  • 투고 : 2012.12.13
  • 심사 : 2013.05.16
  • 발행 : 2013.06.01
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초록

Low voltage ride through capability augmentation of a hybrid micro-grid system is presented in this paper which reflects enhanced reliability in the system. The control scheme involves parallel connected multiple ac-dc bidirectional converters. When the micro-grid system is subjected to a severe voltage dip by any transient fault single power converter may not be able to provide necessary reactive power to overcome the severe voltage dip. This paper discusses the control strategy of additional power converter connected in parallel with main converter to support extra reactive power to withstand the severe voltage dip. During transient fault, when the terminal voltage crosses 90% of its pre-fault value, additional converter comes into operation. With the help of additional power converter, the micro-grid system withstands the severe voltage fulfilling the grid code requirements. This multiple converter scheme provides the micro-grid system the capability of low voltage ride through which makes the system more reliable and stable.

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참고문헌

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피인용 문헌

  1. Adaptive power smoothing control in grid-connected and islanding modes of hybrid micro-grid energy management vol.7, pp.3, 2015, https://doi.org/10.1063/1.4921370